html,body{
  padding: 0;margin: 0;
  height:100%;
}

p,h1,h2,h3,h4,h5,h6,dl,dd,ul,li,ol{
  margin: 0;padding: 0;
}
li{
  list-style: none;
}
em,i{font-style: normal;}
b,strong{font-weight: normal;}
a{text-decoration: none;}

#app{
  display: flex;
  flex-direction: column;
  height:100%;
}